The British illustrator, who has a history of mental illness, is being detained in Wormwood Scrubs following an incident at his Ealing home in which he is alleged to have attacked police officers with a knife.
Ewins required hospital treatment following the clash, and lay in a coma for a week. His local MP Steve Pound recently visited him in prison, reporting that the artist is "in far better spirits" and receiving medical care.
"I visited Brett in Wormwood Scrubs this morning and although it took some time for me to get used to his new heavily bearded appearance I was greatly relieved to find him in far better spirits than when we last spoke," said Pound.
"He is receiving nearly all his medication and lacking only one particular tranquiliser but I'll do what I can to sort this out. Brett now has his own cell and is producing a huge quantity of writing including work on his novel and many songs and poems."
An investigation by the Independent Police Complaints Commission (IPCC) is under way to examine the role that the officers played in the incident.
Ewins is best known for his work on 2000 AD's popular strips Judge Dredd and Rogue Trooper.